Governor-spring.



J. A. LE CATO.

Patented May 18, 1915.

GOVERNOR SPRING.

APPLICATION men SEPT. 10, 1914.

LIQUQYL I quil aronzgzefiaao 2315 16 tocney THE NORRIS PETE '5 C0PHOTO-LITHQ. WASHINGTON, D, c.

UNTTED TATES PATNT @FFTQE.

JOHN A. LE CATO, OF NET/V YORK, N. Y., ASSIGNOR TO STANDARD PNEUMATICACTION (10., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

GOVERNOR-SPRING.

Application filed September 10, 1914.

To all whom it may concern Be it known that 1, JOHN A. Ln CATO, acitizen of the United States, residing at New York, in the county of NewYork and State of New York, have invented a new and usefulGovernor-Spring, of which the following is a specification.

This invention relates to a spring for a pneumatic and although capableof general use, it is designed for use on pneumatic governors formusical instruments to take the place of the springs commonly known asorgan springs.

The principal objects of this invention are to provide a construction inwhich the tension can be adjusted easily and rapidly without dismountingthe spring; to provide a construction in which the adjustment can beaccomplished by means other than hand manipulation of the leaves; and toprovide a spring in which if one of the leaves breaks or becomesdistorted only that one need be replaced.

The invention also involves features of construction as will appearhereinafter.

Reference is to be had to the accompanying drawings, in which- Figure 1is a perspective view of a pneumatic governor with a preferred form ofthis invention applied thereto; Fig. 2 is a plan of the same; and Fig. 3is a sectional view of one of the leaves of the spring.

The invention is shown as applied to an ordinary governor pneumatic 10which is provided with the usual blocks 11 for the pins 12 which passthrough the eyes 13 of the spring leaves 14.

It is the ordinary practice to rivet together the ends of the two leavesof the springs of this character and when it is necessary to change thetension the spring has to be removed and manipulated by hand so as toincrease or decrease the tension as might be necessary. This is anawkward, inexact method of regulating the tension. With my improvedspring all this is avoided as it is only necessary to turn an adjustingscrew and the tension can be increased or decreased to any desireddegree of nicety. Moreover the parts are hinged together in. such a waythat the two elements are separate and readily assembled and detachedand one part can be replaced without replacing the other.

The leaves instead of being connected to- Specification of LettersPatent.

Patented May 18, 1915.

Serial No. 861,157.

invention, both of the leaves being provided with a projection 21 on oneside leaving a hollow depression 22 on the other side. The two leaves ofthe spring being arranged to constitute rights and lefts, it will beseen that the projection on one spring enters the depression on theother and constitutes a hinge. On account of the parts being heldtogether by a screw, this can be carried out in a practical way andthere is no danger of the parts becoming separated from each other inuse. They are much more easily assembled and with less expense thanwould be the case if they were riveted together as is common practice.In addition to this if one of the parts becomes broken or distorted itcan be discarded without spoiling the whole spring.

Although I have illustrated and described only a single form of theinvention, I am aware of the fact that many modifications can be madetherein without departing from the scope of the invention as expressedin the claims. Therefore I do not wish to be limited to all the detailsof construction herein described, but

What I do claim is 1. As an article of manufacture, a double leaf springfor a governor pneumatic having means connected with the two leavesthereof for adjusting the tension of the spring.

2. As an article of manufacture, a spring for a governor pneumaticcomprising two spring leaves pivoted together and both extending beyondthe pivot, and means connected with the extending portions of saidleaves for regulating the tension of the spring.

3. In a spring for a governor pneumatic or the like, the combination ofa pair of spring leaves pivoted together and extending beyond the pivot,said leaves being separated beyond the pivot, and an adjusting devicefor connecting the separated ends,

whereby the tension of said spring can be adjusted.

4. In a spring fora governor pneumatic, the combination with a pair ofspring leaves pivoted together and both projecting beyond the pivot, thetwo projecting ends of said spring being separated from each other, onehaving a slot therein, of a screw extending through said slot andscrewing into the other projecting end for regulating the tension of thespring.

5. In a spring for a governor pneumatic or the like, the combination ofa pair of spring leaves pivoted together and extending beyond the pivot,said leaves having respectively a projection and indentationconstituting the pivot, and an adjusting device for connecting the ends,whereby the tension of said spring can be adjusted.

6. In a spring for a governor pneumatic, the combination of a pair ofspring leaves, one having a projection thereon and the other anindentation, the projection eXtending into the indentation andconstituting a pivot, and means beyond said pivot for adjusting thespring tension of said leaves.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses.

JOHN A. LE CATO.

Witnesses:

W. A. MENNIE, I. ENNIS.

Copies of this patent may be obtained for five cents each, byaddressing, the Commissioner of Patents,

Washington, D. C. r

